Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
  • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
  • B01J31/22—Organic complexes
  • B01J31/2282—Unsaturated compounds used as ligands
  • B01J31/2291—Olefins
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
  • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
  • B01J31/22—Organic complexes
  • B01J31/2282—Unsaturated compounds used as ligands
  • B01J31/2286—Alkynes, e.g. acetylides
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
  • C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic System
  • C07F1/02—Lithium compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
  • B01J2231/10—Polymerisation reactions involving at least dual use catalysts, e.g. for both oligomerisation and polymerisation
  • B01J2231/12—Olefin polymerisation or copolymerisation
  • B01J2231/127—Anionic (co)polymerisation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
  • B01J2531/10—Complexes comprising metals of Group I (IA or IB) as the central metal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
  • B01J2531/10—Complexes comprising metals of Group I (IA or IB) as the central metal
  • B01J2531/11—Lithium

Definitions

• This invention relates to novel polymetalated 1-alkyne compositions. More particularly, this invention relates to such compositions containing two, three or four alkali metal substituents per molecule.
• the compositions are useful as catalysts in anionic polymerizations.
• dilithium salts in the polymerization of butadiene is reported by Makowski et al, J. Macromol. Sci.--Chem., E2(4) pp. 683-700, July, 1968.
• the lithium compounds studied were the 1,3-dilithioacetylides such as the compounds obtained by reacting 1-hexyne with n-butyllithium in ratios of 0.5 and 0.67. At a ratio of 0.5, homogeneous catalyst solutions in hydrocarbons were obtained. Above this ratio, some precipitate was present. In all cases, however, polymerization with butadiene resulted in low molecular weight polymer solutions.
• the catalyst solution included precipitated solids
• the solids dissolved during the course of the polymerization.
• the polymer solution was very viscous, and at the ratio of 0.67 a gelled solution resulted.
• Attapulgus clay was added to the viscous solution or to the gelled solution, fluid solutions were obtained. This result was attributed to the presence of water in the clay.
• Polylithium polymerization initiators also are described in U.S. Pat. No. 3,377,404.
• the initiators are prepared by first contacting an excess of lithium with an organic halide containing two to four halogen atoms in a polar solvent such as ether.
• the intermediate formed in the this step can be represented by the formula
• x is an integer of two to four and R is a hydrocarbon group.
• the intermediate is contacted with a small amount of a conjugated diene such as 1,3-butadiene.
• the amount of diene is generally from about one to about ten moles per mole of lithium compound.
• a substantial portion or all of the polar solvent is removed and replaced by a hydrocarbon diluent.
• the polylithiated hydrocarbon soluble compounds prepared in this manner are reported to be useful as initiators of the polymerization of conjugated dienes.
• U.S. Pat. No. 3,784,637 describes multi-functional polymerization initiators prepared from polyvinylsilane compounds or polyvinylphosphine compounds. More particularly, the multi-functional polymerization initiators are prepared by reacting an organomonolithium compound such as n-butyllithium with a polyvinyl phosphine compound or polyvinylsilane compound. Preferably, the reaction is conducted in the presence of a solublizing monomer such as a polymerizeable conjugated diene, monovinyl-substituted aromatic compound, or mixtures thereof. Examples of solublizing monomers include conjugated dienes such as 1,3-butadiene and aromatic vinyl compounds such as styrene.
• solublizing monomers include conjugated dienes such as 1,3-butadiene and aromatic vinyl compounds such as styrene.
• Hydrocarbon soluble polymetalated 1-alkyne compositions are described, and in one embodiment, these compositions may be characterized by the formula ##STR2## wherein R is hydrogen, a hydrocarbyl group or R 1 M, M is an alkali metal, R 1 is a divalent oligomeric hydrocarbyl group comprising moieties derived from a conjugated diene, and wherein the total number moieties derived from a conjugated diene in all of the R 1 groups in Formula I is from about 2 to about 30.
• the alkali metal is lithium.
• the invention relates to hydrocarbon soluble polymetalated 1-alkyne catalyst for anionic polymerizations comprising the reaction product of a 1-alkyne, an organometallic compount R°M, and a 1,3-conjugated diene wherein R° is a hydrocarbyl group, M is an alkali metal, the mole ratio of conjugated diene to 1-alkyne is at least about 2:1, and the reaction is conducted at a temperature of at least about 70° C.
• Polymetalated 1-alkyne compositions of one embodiment of the present invention are characterized by the formula ##STR3## wherein R is hydrogen, a hydrocarbyl group or R 1 M, M is an alkali metal, R 1 is a divalent oligomeric hydrocarbyl group comprising moieties derived from a conjugated diene, and wherein the total number moieties derived from a 1,3-conjugated diene in all of the R 1 groups in Formula I is from about 2 to about 30.
• R may be hydrogen or a hydrocarbyl group which may be a saturated aliphatic, saturated cycloaliphatic or an aromatic group generally containing up to about 20 carbon atoms.
• R is an alkyl group containing from 1 to 15 carbon atoms.
• R is an alkyl group containing 1 to 6 carbon atoms.
• R is an alkyl group containing from 3 to about 9 carbon atoms.
• M is an alkali metal including lithium, sodium, potassium, rubidium, cesium and francium. Lithium, sodium and potassium are preferred alkali metals, and lithium is the most preferred alkali metal, particularly when the polymetalated compositions of the present invention are to be used as polymerization catalysts.
• the substituent R 1 is a divalent oligomeric hydrocarbyl group comprising moieties derived from a 1,3-conjugated diene.
• the conjugated dienes may be any of a variety of 1,3-conjugated dienes including those containing from four to 12 carbon atoms, and preferably from four to eight carbon atoms per molecule.
• conjugated dienes include: 1,3-butadiene; isoprene; 2,3-dimethyl-1,3-butadiene; 1,3-pentadiene(piperylene); 2-methyl-3-ethyl-1,3-butadiene; 3-methyl-1,3-pentadiene; 1,3-hexadiene; 2-methyl-1,3-hexadiene; 1,3-heptadiene; 1,3-octadiene; etc.
• the moeties of the oligomeric group R 1 are derived from 1,3-butadiene, isoprene or piperylene.
• the number of moieties derived from a conjugated diene in the R 1 groups of the composition of Formula I may be varied over a range of from two to about 30. Generally, the total number of moieties derived from a conjugated diene in all of the R 1 groups in the composition of Formula I is from about three to about 30. In one preferred embodiment, the total number of conjugated diene derived moieties in all of the R 1 groups in the composition of Formula I is from about eight to about 20.
• the number of moieties derived from a conjugated diene in the oligomeric groups R 1 can be varied to provide compositions of Formula I having a weight average molecular weight of from about 200 to about 3000. In one preferred embodiment, the weight average molecular weight of the compositions of Formula I is within a range of from about 800 to about 2000.
• hydrocarbon soluble tri- and tetrametalated 1-alkyne compositions characterized by Formula I and additional hydrocarbon soluble polymetalated 1-alkyne compositions of other embodiments of the present invention can be obtained by reacting a 1-alkyne, an organometallic compound R°M, and a conjugated diene at a temperature above about 70° C.
• the 1-alkyne may be represented by the formula
• R and R 3 are each independently hydrogen or a hydrocarbyl group.
• Representative examples of such 1-alkyne compounds include 1-propyne; 1-butyne; 1-pentyne; 1-hexyne; 1-octyne; 1-decyne, 1-dodecyne; 1-hexadecyne; 1-octadecyne; 3-methyl-1-butyne; 3-methyl-1-pentyne; 3-ethyl-1-pentyne; 3-propyl-6-methyl-1-heptyne; 3-cyclopentyl-1-propyne; etc.
• the organometallic compound may be represented by the formula R°M wherein R° is a hydrocarbyl group which may be a saturated aliphatic group, a saturated cycloaliphatic group, or an aromatic group. Generally, R° will contain up to about 20 carbon atoms. M is an alkali metal including lithium, sodium, potassium, rubidium, cesium and francium.
• organometallic compound R°M include: methylsodium, ethyllithium; propyllithium; isopropylpotassium, n-butyllithium, s-butyllithium; t-butylpotassium; t-butyllithium; pentyllithium; n-amylrubidium; tert-octylcesium; phenyllithium; naphthyllithium; etc.
• the conjugated dienes which are reacted with the intermediate to form the desired compositions are preferrably 1,3-conjugated dienes of the type which have been described above.
• the polymetalated 1-alkyne compositions of the present invention are prepared by the method which comprises the steps of
• the mole ratio of R°M to 1-alkyne is between about 2:1 and about 4:1.
• the mole ratio of conjugated diene to 1-alkyne in the reaction is at least about 2:1 and may be as high as about 30:1. More generally, the ratio will be in the range of from about 8:1 to 20:1.
• the reaction of the 1-alkyne with the organometallic compound followed by reaction with the conjugated diene can be carried out in the presence of an inert diluent, and particularly, in the presence of a hydrocarbon such as an aliphatic, cycloaliphatic or aromatic hydrocarbon.
• a hydrocarbon such as an aliphatic, cycloaliphatic or aromatic hydrocarbon.
• suitable hydrocarbon diluents include n-butane, n-hexane, isooctane, decane, dodecane, cyclohexane, methylcyclohexane, benzene, toluene, xylene, etc.
• Preferred hydrocarbons are aliphatic hydrocarbons containing from four to about 10 carbon atoms per molecule. Mixtures of hydrocarbons can also be utilized.
• compositions of the present invention will depend primarily upon the type of 1-alkyne, and the relative amounts of the 1-alkyne and the organometallic compounds present in the initial reaction to form the intermediate.
• the compositions of the present invention generally will be obtained by reacting at least about two moles of an organometallic compound with each mole of the 1-alkyne.
• a molar ratio of organometallic compound to 1-alkyne of 2:1 results in the formation of a dimetal compound, and the use of a molar ratio of 3:1 results in a trimetalated compound.
• reaction of one mole of propyne with one mole of n-butyllithium will form 1-lithiopropyne; two moles of n-butyllithium will form 1,3-dilithiopropyne; three moles of n-butyllithium will form 1,3,3-trilithiopropyne; and four moles of n-butyllithium will form 1,3,3,3-tetralithiopropyne.
• the reaction between the 1-alkyne and the organometallic compound to form the intermediate can be effected in temperatures of 20° -30° C., and the reaction is generally conducted in an inert atmosphere such as under nitrogen. The reaction generally is conducted at atmospheric pressure.
• the intermediate obtained from the first step is a polymetalated alkyne which is either insoluble or only slightly soluble in hydrocarbons.
• the reaction between the intermediate and the conjugated diene to form a hydrocarbon soluble product is conducted at a temperature above 70° C. and more generally at a temperature of from about 70° C. to about 150° C.
• the reaction generally is completed in less than about 5 hours, and the reaction results in a change in the color of the solution from a yellow to red or reddish brown.
• the reaction is completed in about 3 hours.
• the reaction is completed in less than 3 hours. If the reaction mixture is heated for too long a period, the catalytic activity of the resulting product may be reduced.
• the product of this reaction is a polymetalated alkyne containing one or more divalent oligomeric hydrocarbyl groups comprising moieties derived from the conjugated diene.
• Relatively small amounts of the conjugated diene are reacted with the intermediate in the second step.
• the mole ratio of conjugated diene to 1-alkyne in the intermediate is at least about 2:1 and may be as high as 30:1. In one preferred embodiment, the mole ratio of conjugated diene to 1-alkyne is in a range of from about 8:1 to about 20:1.
• the polymetalated compounds of this invention contain active as well as inactive metal.
• the presence of at least two different types of carbon metal linkages in the compositions of this invention can be shown by both chemical and physical evidence.
• Gilman titration with allyl bromide distinguishes between metal acetylide (--C.tbd.C--M) which is inactive and other carbon lithium linkages (--C--C--M) which are active, J. Organometal Chem., 1 (1963) 8.
• Titration of the compositions of this invention show 50%, 67% and 75% of the total carbon-metal linkages are "active" corresponding to di-, tri-, and tetra-metalated alkynes.
• Ultraviolet and visible spectral studies show peak absorbances at 300-340 NM and 400-450 NM for the compositions of this invention corresponding to inactive and active metal linkages, respectively.
• compositions are soluble in hydrocarbon solvents, and the solutions are stable at room temperature for an extended period of time.
• soluble in hydrocarbon solvent or “hydrocarbon soluble” as used in the specifications and claims indicate that the materials are soluble in hydrocarbons to the extent of at least about 5 per 100 g of solvent, particularly an aliphatic solvent such as hexane, at temperatures of about 25° C.
• the compositions are useful as catalysts in the anionic polymerization and copolymerization of various hydrocarbon monomers.
• n-butyllithium 7 ml., 11.2 mM, 1.6M solution
• Titration of the solid product by the Gilman technique indicates that 96-98% of the theoretical carbon-lithium linkages are obtained.
• the mixture is tumbled in a bath maintained at about 80° C. for three hours.
• the resulting reddish brown solution is cooled at room temperature.
• Analysis of the solution by Gilman's titration technique indicates 48.9% active carbon-lithium linkages.
• the calculated active carbon-lithium linkage for 1,3-dilithio-1-octyne is 50.0%.
• Example 2 The general procedure of Example 2 is repeated utilizing different 1-alkynes as summarized in Table I.
• the reaction conditions and the analysis of the resulting products also are summarized in Table I.
• the polymetalated 1-alkynes of the present invention are stable for an extended period of time at room temperature.
• the polymetalated compositions can be stored at room temperature under a nitrogen atmosphere for up to six months or more without significant loss of their activity as catalysts for anionic polymerization reactions.
• the polymetalated 1-alkyne compositions of the present invention are useful as catalyts for the anionic polymerization of a variety of hydrocarbon monomers including olefins such as ethylene, styrene, ⁇ -methylstyrene, divinylbenzene and vinyl toluene; and dienes such as butadiene, isoprene, piperylene and 2,3-dimethylbutadiene.
• the catalysts also may be utilized for preparing copolymers or mixtures containing two or more of the above olefins, dienes, or mixtures thereof.
• the polymers and copolymers obtained in this manner contain alkali metal, and polymers of these types have been referred to as "living polymers".
• the "live ends" of the polymers can be used to couple the polymers or to introduce terminal, functional groups such as silane, hydroxyl, carboxyl, mercapto, amino, etc. by procedures well known to those skilled in the art.

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• 1990
  • 1990-09-21 US US07/586,489 patent/US5080835A/en not_active Expired - Lifetime
• 1991
  • 1991-09-19 DE DE69125776T patent/DE69125776T2/de not_active Expired - Lifetime
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  • 1991-09-19 EP EP91115965A patent/EP0476663B1/en not_active Expired - Lifetime
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